F. Pineda and H. W. Schnopper, Center for Astrophysics, report the detection of x-ray emission from a ~ 1' diameter (90-percent confidence) region containing the galaxy MCG 5-23-16. The 2-10-keV flux is ~ 1 x 10**-10 erg cm**-2 s**-1 The galaxy lies within the error boxes quoted for 4U 0945-30 and 2A 0946-310 but is not one of the suggested candidates. SAS-3 data were obtained during 1977 Feb. 19-23 and yield the x-ray position R.A. = 9h45m28s.7, Decl. = -30o42'24" (equinox 1950.0). The position of MCG 5-23-16 is R.A. = 9h45m28s.43 +/- 0s.13, Decl. = -30o42'57".0 +/- 1".7. Observations in the radio, infrared and optical wavelength bands are urged.
International Astronomical Union Circular
- Pub Date:
- March 1978